光学学报, 2020, 40 (19): 1919001, 网络出版: 2020-09-29
回音壁模式光学微腔的激发模式控制 
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Controllable Excitation of Whispering Gallery Mode Micro-Rod Resonator
图 & 表
图 1. 微棒腔的截面电场分布。(a) n=1, m=l; (b) n=1, m=l-1; (c) n=2, m=l; (d) n=1, m=l-2
Fig. 1. Cross-sectional field distributions of micro-rod cavity. (a) n=1, m=l; (b) n=1, m=l-1; (c) n=2, m=l; (d) n=1, m=l-2
图 2. 辅助激光加热方法示意图。(a)辅助光停留在蓝失谐区;(b)泵浦光进入蓝失谐区;(c)泵浦光稳定在红失谐区
Fig. 2. Schematic of auxiliary laser heating method. (a) Auxiliary laser staying at blue-detuned region; (b) pump laser entering blue-detuned region; (c) pump laser staying at red-detuned region steadily
图 4. 微腔的加工。(a)微腔加工设备示意图;(b)微棒腔照片;(c)耦合与测试设备示意图
Fig. 4. Fabrication of micro-rod cavity. (a) Schematic of experimental setup for fabricating micro-rod cavity; (b) photo of micro-rod cavity; (c) schematic of experimental setup for coupling and measurement
图 5. 不同激光器功率下的功率透过谱。(a)10.8 W; (b)11.2 W; (c)11.4 W; (d)11.6 W; (e)谐振峰功率透过谱
Fig. 5. Power transmission spectra under different laser powers. (a) 10.8 W; (b)11.2 W; (c)11.4 W; (d) 11.6 W; (e) resonance peak power transmission spectrum
图 6. 功率透过谱随耦合距离的变化。(a) 0; (b) 90 nm; (c) 180 nm; (d) 240 nm; (e)谐振峰功率透过谱
Fig. 6. Power transmission spectra under different coupling distances. (a) 0; (b) 90 nm; (c) 180 nm; (d) 240 nm; (e) resonance peak power transmission spectrum
图 7. 孤子的生成。(a)实验设备示意图;(b)泵浦光和辅助光反向耦合进入微腔
Fig. 7. Generation of solition. (a) Schematic of experimental setup; (b) pump laser coupling with auxiliary laser in opposite direction and entering micro-rod cavity
表 1耦合点处不同半径锥形光纤的耦合参数及谐振峰透过率
Table1. Coupling parameters and resonance peak transmission ratios of tapered fibers with different radii at coupling point
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表 2不同曲率微腔的耦合参数及谐振峰透过率
Table2. Coupling parameters and resonance peak transmission ratios of micro-rod cavities with different curvatures
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温钦, 秦晋辉, 周恒, 邱昆. 回音壁模式光学微腔的激发模式控制[J]. 光学学报, 2020, 40(19): 1919001. Qin Wen, Jinhui Qin, Heng Zhou, Kun Qiu. Controllable Excitation of Whispering Gallery Mode Micro-Rod Resonator[J]. Acta Optica Sinica, 2020, 40(19): 1919001.
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